A024706 Positions of multiples of 3 in A024702.

7, 8, 12, 16, 20, 21, 24, 28, 29, 31, 38, 41, 42, 45, 46, 51, 54, 57, 58, 63, 72, 75, 78, 83, 84, 87, 91, 93, 96, 98, 99, 100, 102, 106, 108, 112, 115, 118, 124, 126, 128, 131, 134, 137, 140, 141, 144, 145, 150, 152, 153, 157, 159, 162, 164, 167, 169, 178, 179, 184, 187, 190, 191

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Programs

PARI

apply(n->primepi(n), select(n->n%9==1||n%9==8, primes(100))) \\ Charles R Greathouse IV, May 31 2013

Extensions

Adjusted for offset. - Charles R Greathouse IV, May 31 2013